Clayton Foster, MD
Clayton Foster, MD is an Infectious Disease Physician in Kailua Kona, HI, registered under NPI 1003105255. This provider registers 2 separate taxonomy codes, which usually means they practise across more than one recognised specialty.
Getting there
Here is what surrounds this office in Kailua Kona, based on OpenStreetMap data collected Aug 29, 2026. Parking is available about 741 ft away. A pharmacy sits 529 ft from the entrance (Longs Drugs), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 0.23 mi away.
Getting here and what is nearby
Grocery KTA Super Stores 0.00 mi ~1 min
78-6831 Alii Drive, Kailua Kona 96740
Restaurant Bianelli's 91 ft ~1 min
Restaurant Kenichi’s Bento Box 289 ft ~2 min
Restaurant Kenichi Pacific 355 ft ~2 min
Parking 426 ft ~2 min
Pharmacy Longs Drugs 529 ft ~3 min
78-6831 Aliʻi Drive, Kailua Kona 96740
Parking 728 ft ~3 min
Parking 741 ft ~3 min
Gas station Aloha Petroleum 908 ft ~4 min
Hotel Kona Coast Resort 941 ft ~4 min
Alii Drive, Kona
Convenience Aloha Petroleum 982 ft ~4 min
Mo-Fr 08:00-16:30
Coffee Peaberry & Galette 0.23 mi ~5 min
Hotel Kanaloa at Kona by Outrigger 0.42 mi ~9 min
Alii Drive, Kona
Distances are straight‑line estimates — walking routes may be longer. Hours and phone numbers can change; call ahead to confirm.
Credentials and Medicare
| Licence | State | Specialty |
|---|---|---|
| DR.0054823 | CO | Internal Medicine Physician |
| CDRH.0054823 | CO | Infectious Disease Physician |
| DR.00654823 | CO | Infectious Disease Physician |
| MD-22161 | HI | Infectious Disease Physician primary |
Licences are recorded in 2 states: CO, HI. Providers licensed in several states often practise near a state border or deliver telehealth across state lines.
- Status
- Approved
- Provider type
- Practitioner - Internal Medicine
- PAC ID
- 5991010613
- Enrollment ID
- I20220426000641
Medicare enrolment is recorded as approved under the provider type Practitioner - Internal Medicine. Being enrolled means the provider can bill Medicare; it does not tell you whether they are currently accepting new Medicare patients. Call the office to confirm.
Licensed in 2 states
This provider holds licences in 2 states: Colorado and Hawaii. The practice address on file is in Kailua Kona, HI, but a licence in another state usually means they see patients there too — either at a second location or by telehealth. If the address above is far from you, it is worth calling to ask whether they practise closer to where you live.
- Licence
- MD-22161
- Specialty
- Infectious Disease Physician
Licence numbers are self-reported to NPPES at registration. They do not confirm a licence is currently active, in good standing, or valid for the specialty shown — only the state board can tell you that, which is why we link to each one.
What Infectious Disease covers
An internist who deals with infectious diseases of all types and in all organ systems. Conditions requiring selective use of antibiotics call for this special skill. This physician often diagnoses and treats AIDS patients and patients with fevers which have not been explained. Infectious disease specialists may also have expertise in preventive medicine and travel medicine. NUCC Health Care Provider Taxonomy, code 207RI0200X
All registered taxonomy codes
This provider registers 4 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 207R00000X | Internal Medicine Physician | DR.0054823 | CO | |
| 207RI0200X | Infectious Disease Physician Infectious Disease | CDRH.0054823 | CO | |
| 207RI0200X | Infectious Disease Physician Infectious Disease | DR.00654823 | CO | |
| 207RI0200X | Infectious Disease Physician Infectious Disease | MD-22161 | HI | primary |
The taxonomy records how the provider classifies their own practice. It does not confirm which conditions they currently treat, whether they are accepting new patients, or which insurance they take — call the office for that.
Full NPPES record
An NPI-1 identifies a single person. It stays with the clinician for life, even if they move practice or change state, which is why the address on file can lag behind where they actually work today.
| NPI | 1003105255 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Mar 28, 2011 |
| Last updated | Jul 6, 2022 |
| Status | Active |
| Sole proprietor | No |
| Gender | Male |
| Credential | MD |
| Practice address |
78-6831 ALII DR STE 422 Kailua Kona, HI 96740 (808) 747-8321 Fax (808) 322-6005 |
| Mailing address |
73-1331 NAWAHIE LOOP Kailua Kona, HI 96740 |
| Other identifiers |
42132738
· Medicaid (CO) |
Number check
How the check works, step by step
Every NPI carries a Luhn check digit — the same scheme used on credit cards. CMS prefixes the number with 80840 before computing it, which marks it as a US health identifier.
| Digit | 8 | 0 | 8 | 4 | 0 | 1 | 0 | 0 | 3 | 1 | 0 | 5 | 2 | 5 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 2 | 0 | 1 | 2 | 1 |
Sum = 35 · next multiple of 10 = 40 · check digit = 5 · actual last digit = 5
A valid check digit only means the number is well-formed. It does not mean the provider is licensed, active, or in good standing — those are separate questions answered by the sections above.